Supraventricular arrhythmia includes atrial arrhythmias (atrial tachycardia, atrial flutter, atrial fibrillation), atrioventricular nodal reentrant tachycardia, junctional ectopic tachycardia, atrioventricular reentrant tachycardia (Wolf-Parkinson-White Syndrome), orthodromic or antidromic. Supraventricular arrhythmia is distinct from ventricular tachycardia, which originates in the ventricles.